nobody attributed a specific feature of the pic to any specific feature of camera or lens. At that scale (with resampling), it might be difficult anyway. On the wall, it may be a different story.
BTW my most enjoyed fifties are the Zeiss Milvus 50/2, and the 50/2 and the 50/1.2 Nikkors. Correlation with chart or brickwall shooting results ? zilch.